Titanium tube heat exchanger

Abstract

The invention relates to the technical field of heat exchangers, and particularly discloses a titanium tube heat exchanger which comprises a shell, a tube box, a titanium heat tube unit arranged in the shell and communicated with the interior of the tube box, and a flow guide unit arranged in the shell. The adjacent fan-shaped baffle plates in the flow guide unit are distributed in a staggered mode in the axial direction, a spiral flowing channel is formed on the periphery of the titanium heat pipe unit under rotation driving of the rotating frame, cold flow flows along the spiral path when flowing to the cold flow output pipe from the cold flow input pipe, the spiral cold flow channel overlaps circumferential rotation and axial reciprocating translation of the channel, and therefore the heat exchange efficiency of the titanium heat pipe is improved. The contact area and path of the cold flow and the titanium heat pipe unit are continuously and dynamically changed, the cold flow is forced to continuously sweep different surface areas of the titanium heat pipe unit, a temperature boundary layer of the cold flow is effectively broken, the cold flow in different areas in the shell is promoted to be fully mixed and replaced, heat exchange dead angles are effectively reduced, and heat exchange efficiency is improved. And the heat exchange efficiency between hot flow and cold flow is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of heat exchangers, and more particularly to a titanium tube heat exchanger. Background Art

[0002] Titanium tube heat exchangers are widely used in chemical, electric power, seawater desalination and other industries due to their excellent corrosion resistance. They mainly adopt U-shaped tube structure, and the core component is titanium heat exchange tube. Heat is transferred through the titanium tube wall to exchange heat between the tube side and shell side fluids.

[0003] The shell of existing titanium tube heat exchangers usually uses static baffles or fixed baffle structures. The heat exchange areas of cold flow and hot flow are relatively fixed, and the cold and hot fluids only flow through a single static path, which can easily cause cold flow stagnation in some areas, forming heat exchange dead corners and reducing the overall heat exchange effect. Due to the uneven distribution of the flow field, low-temperature condensation or excessive heat exchange may occur in some parts of the heat pipe, affecting the stable operation of the heat exchanger. Summary of the Invention

[0004] In order to overcome the above technical problems, the present invention proposes a titanium tube heat exchanger.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] A titanium tube heat exchanger, comprising:

[0007] The shell has side walls at both ends connected to a cold flow input pipe and a cold flow output pipe respectively;

[0008] A pipe box is detachably connected to one end of the shell, a sealing plate is provided at the connection between the pipe box and the shell, and the upper and lower sides of the pipe box are respectively connected to the heat flow input pipe and the heat flow output pipe;

[0009] A titanium heat pipe unit is disposed in the shell and communicated with the interior of the pipe box;

[0010] The guide unit is arranged in the shell and includes a rotating frame arranged at one end of the shell. A plurality of telescopic columns are distributed circumferentially on the rotating frame. A plurality of fan-shaped baffles are evenly distributed on the telescopic columns. Adjacent fan-shaped baffles are staggered in sequence along the axial direction.

[0011] As a further solution of the present invention: the guide unit also includes a first motor installed at one end of the shell, and the output end of the first motor is connected to a drive shaft for driving the rotating frame; a plurality of limiting slides are axially arranged on the driving shaft, and the limiting slides are axially slidably connected to the rotating frame.

[0012] As a further solution of the present invention: a wave ring is provided on the rotating frame, and a plurality of recessed portions are provided on the circumferential surface of the wave ring; a fixed ring is provided on the inner wall of the housing, and a plurality of top rods adapted to the wave ring are provided on the circumferential surface of the fixed ring;

[0013] The telescopic column includes a sleeve rod fixed on the rotating frame, and a sliding rod is movably embedded in the end of the sleeve rod away from the rotating frame, and a spring is sleeved on the sliding rod; a rotating ring is rotatably installed on the closing plate, and the end of the sliding rod away from the sleeve rod is fixed on the rotating ring.

[0014] As a further solution of the present invention, the titanium heat pipe unit includes a mounting plate fixedly disposed in the housing, the mounting plate being provided with a plurality of groups of first straight heat pipes and second straight heat pipes communicating with the interior of the pipe box, the first straight heat pipes and the second straight heat pipes being connected via arc-shaped heat pipes;

[0015] The center of the mounting plate is fixedly connected to the sealing plate through a plurality of groups of top support rods, and the periphery of the mounting plate is fixedly connected to the sealing plate through a plurality of circumferentially distributed pulling rods.

[0016] As a further solution of the present invention: a volume adjustment unit is provided in the pipe box, the volume adjustment unit divides the pipe box into an upper chamber and a lower chamber, the volume adjustment unit includes a fixed partition provided on the sealing plate and a flip shaft rotatably mounted on one end of the fixed partition, the flip shaft is provided with a flip partition, a second motor for driving the flip shaft is installed on the pipe box, and temperature sensors for detecting the heat flow temperature in the upper chamber and the lower chamber are provided on both sides of the fixed partition;

[0017] The volume adjustment unit further includes a controller, which is used to control the second motor to drive the flip partition to flip according to the temperature difference detected by the temperature sensor, so as to adjust the volume difference between the upper chamber and the lower chamber.

[0018] As a further solution of the present invention: an arc-shaped sealing strip that fits the inner wall of the pipe box is provided on one side of the flip partition away from the flip axis, and arc-shaped scraping strips are symmetrically provided on both sides of the arc-shaped sealing strip.

[0019] As a further solution of the present invention: a card slot is provided in the fixed partition, and a sealing bag abutting against the flip shaft is embedded in the card slot.

[0020] As a further solution of the present invention: a sealed cavity is opened in the pipe box, a second magnetic rotor is installed at one end of the flip shaft extending into the sealed cavity, and a first magnetic rotor is installed at one end of the output shaft of the second motor extending into the sealed cavity.

[0021] As a further solution of the present invention: an air cavity communicating with the interior of the sealing cavity is axially opened in the flip shaft, an air channel is opened on one side of the sealing cavity, and an air chamber communicating with the air cavity and the arc-shaped sealing bag strip is opened in the flip partition.

[0022] As a further solution of the present invention: a wedge-shaped cavity is provided on one side of the sealing cavity, a wedge-shaped retaining ring is embedded in the wedge-shaped cavity, a wedge-shaped groove is provided on the flip shaft, an inner sealing ring adapted to the wedge-shaped groove is provided on the inner side of the wedge-shaped retaining ring, and an outer sealing ring adapted to the wedge-shaped cavity is provided on the outer side of the wedge-shaped retaining ring.

[0023] Beneficial effects of the present invention:

[0024] The rotating frame of the present invention drives the circumferentially distributed fan-shaped baffles to rotate around the titanium heat pipe unit, while the telescopic column drives these baffles to perform axial reciprocating motion. This dual motion of circumferential rotation and axial reciprocating motion causes the cold flow in the shell to be subjected to strong dynamic disturbance, effectively increasing the turbulence of the cold flow.

[0025] Adjacent fan-shaped baffles are staggered along the axial direction. Driven by the rotation of the turret, a spiral flow channel is formed on the periphery of the titanium heat pipe unit. When the cold flow flows from the cold flow input pipe to the cold flow output pipe, it flows along this spiral path. The spiral cold flow channel itself is superimposed on the circumferential rotation and axial reciprocating translation of the channel, continuously and dynamically changing the contact area and path of the cold flow and the titanium heat pipe unit, forcing the cold flow to continuously sweep across different surface areas of the titanium heat pipe unit.

[0026] The dynamic spiral channel effectively breaks the temperature boundary layer of the cold flow through its circumferential rotation and axial reciprocating motion, and promotes the full mixing and replacement of cold flows in different areas of the shell, effectively reducing heat exchange dead corners and improving the overall heat exchange efficiency and uniformity between the hot flow in the titanium heat pipe unit and the cold flow in the shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention will be further described below with reference to the accompanying drawings.

[0028] Figure 1 It is a three-dimensional schematic diagram of the present invention;

[0029] Figure 2 is a cross-sectional view of the present invention;

[0030] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0031] Figure 4 Schematic diagram of the diversion unit in the present invention;

[0032] Figure 5 A cross-sectional view from another perspective of the present invention;

[0033] Figure 6 for Figure 5 Enlarged view of point B in the middle;

[0034] Figure 7 Schematic diagram of the structure of the titanium heat pipe unit in the present invention;

[0035] Figure 8 A longitudinal sectional view of the pipe box of the present invention;

[0036] Figure 9 for Figure 8 Enlarged view of point C in the middle;

[0037] Figure 10 for Figure 8 Enlarged view of point D in the middle;

[0038] Figure 11 is a transverse cross-sectional view of the pipe box of the present invention;

[0039] Figure 12 for Figure 11 Enlarged view of point E in the middle;

[0040] Figure 13 for Figure 12 Enlarged view of point F in the middle.

[0041] In the picture:

[0042] 100, housing; 110, cold flow inlet pipe; 120, cold flow outlet pipe;

[0043] 200, pipe box; 201, sealed chamber; 202, wedge-shaped chamber; 203, air duct; 210, heat flow input pipe; 220, heat flow output pipe; 230, upper chamber; 240, lower chamber; 250, sealing plate;

[0044] 300, titanium heat pipe unit; 310, pulling rod; 320, top support rod; 330, mounting plate; 340, first straight heat pipe; 350, second straight heat pipe; 360, curved heat pipe;

[0045] 400, guide unit; 410, rotating frame; 420, telescopic column; 421, sleeve rod; 422, slide rod; 423, spring; 430, first motor; 450, fan-shaped baffle; 460, rotating ring; 470, wave ring; 471, recessed portion; 480, fixing ring; 481, ejector rod; 490, drive shaft; 491, limit slide;

[0046] 500, volume adjustment unit; 510, fixed partition; 511, card slot; 512, sealing bag; 520, flip partition; 521, air chamber; 530, arc-shaped sealing bag strip; 540, arc-shaped scraper strip; 550, flip shaft; 551, air cavity; 552, second magnetic rotor; 553, wedge-shaped slot; 560, second motor; 561, first magnetic rotor; 570, wedge-shaped clamping ring; 571, inner sealing ring; 572, outer sealing ring; 580, temperature sensor. DETAILED DESCRIPTION

[0047] The subject matter described herein will now be discussed with reference to exemplary embodiments. It should be understood that these embodiments are discussed solely to enable those skilled in the art to better understand and implement the subject matter described herein, and that the functions and arrangements of the elements discussed may be varied without departing from the scope of this specification. Various examples may omit, substitute, or add various processes or components as needed. In addition, features described with respect to some examples may also be combined in other examples.

[0048] See also Figure 1 、 Figure 2 and Figure 4 The present invention discloses a titanium tube heat exchanger, comprising a shell 100, a tube box 200, a titanium heat pipe unit 300 and a flow guide unit 400, wherein the side walls at both ends of the shell 100 are respectively connected to a cold flow input pipe 110 and a cold flow output pipe 120; the tube box 200 is detachably connected to one end of the shell 100, a sealing plate 250 is provided at the connection between the tube box 200 and the shell 100, and the upper and lower sides of the tube box 200 are respectively connected to a hot flow input pipe 210 and a hot flow output pipe 220; the titanium heat pipe unit 300 is arranged in the shell 100 and communicates with the interior of the tube box 200; the flow guide unit 400 is arranged in the shell 100, and comprises a rotating frame 410 arranged at one end of the shell 100, and a plurality of telescopic columns 420 are circumferentially distributed on the rotating frame 410, and a plurality of fan-shaped baffles 450 are equidistantly distributed on the telescopic columns 420, and adjacent fan-shaped baffles 450 are staggered in sequence along the axial direction;

[0049] Specifically, the cold flow for cooling and absorbing heat is introduced into the shell 100 from the cold flow input pipe 110, and the hot flow to be cooled and exchanged for heat is introduced into the pipe box 200 from the hot flow input pipe 210. The hot flow in the pipe box 200 passes through the titanium heat pipe unit 300, flows through the shell 100, and flows back into the pipe box 200 again and is discharged from the hot flow output pipe 220. During the flow of the hot flow in the titanium heat pipe unit 300, the hot flow exchanges heat with the cold flow filled outside the titanium heat pipe unit 300, thereby achieving heat exchange. The cold flow after absorbing heat is discharged from the cold flow output pipe 120 of the shell 100.

[0050] The rotating frame 410 provided in the shell 100 can drive each group of fan-shaped baffles 450 to rotate circumferentially around the periphery of the titanium heat pipe unit 300. At the same time, since the distribution angles of adjacent fan-shaped baffles 450 are staggered with each other, a dynamic spiral cold flow channel can be formed around the titanium heat pipe unit 300. In the process of the cold flow flowing from the cold flow input pipe 110 to the cold flow output pipe 120, it needs to pass through the spiral cold flow channel formed by the separation of each group of fan-shaped baffles 450, thereby continuously changing the heat exchange area between the cold flow and the titanium heat pipe unit 300. domain; in addition, while the rotating frame 410 drives each group of fan-shaped baffles 450 to rotate circumferentially around the titanium heat pipe unit 300, the telescopic column 420 can also drive each group of fan-shaped baffles 450 to move back and forth axially, thereby realizing the axial reciprocating switching of the spiral cold flow channel. Through the dual dynamic switching of circumferential and axial directions, the cold flow can be promoted to fully exchange heat with the heat flow in the titanium heat pipe unit 300, and at the same time, the cold flow in the shell 100 is pushed back and forth circumferentially and axially, so that the heat conduction effect of the cold flow in different areas is more sufficient.

[0051] It should be noted that the rotating frame 410 drives the circumferentially distributed fan-shaped baffles 450 to rotate around the titanium heat pipe unit 300, while the telescopic column 420 drives these baffles to perform axial reciprocating motion. This dual motion of circumferential rotation and axial reciprocating motion causes the cold flow in the housing 100 to be subjected to strong dynamic disturbances, effectively increasing the turbulence of the cold flow.

[0052] Adjacent fan-shaped baffles 450 are staggered along the axial direction. Driven by the rotation of the rotating frame 410, a spiral flow channel is formed around the titanium heat pipe unit 300. When the cold flow flows from the cold flow input pipe 110 to the cold flow output pipe 120, it flows along this spiral path. The spiral cold flow channel itself combines the circumferential rotation and axial reciprocating translation of the channel to continuously and dynamically change the contact area and path between the cold flow and the titanium heat pipe unit 300, forcing the cold flow to continuously sweep across different surface areas of the titanium heat pipe unit 300.

[0053] The above-mentioned dynamic spiral channel effectively breaks the temperature boundary layer of the cold flow through its circumferential rotation and superimposed axial reciprocating motion, and promotes the full mixing and replacement of the cold flows in different areas within the shell 100, effectively reducing the heat exchange dead corners and improving the overall heat exchange efficiency and uniformity between the hot flow in the titanium heat pipe unit 300 and the cold flow in the shell 100.

[0054] In one embodiment, see Figure 2 and Figure 3 The air guide unit 400 further includes a first motor 430 mounted on one end of the housing 100 , and an output end of the first motor 430 is connected to a driving shaft 490 for driving the rotating frame 410 ;

[0055] Specifically, the first motor 430 drives the drive shaft 490 to rotate, and the drive shaft 490 can always apply torque to the rotating frame 410, thereby driving the rotating frame 410 to rotate circumferentially, and then driving each group of fan-shaped baffles 450 to rotate circumferentially around the titanium heat pipe unit 300, so as to realize the circumferential dynamic switching of the spiral cold flow channel.

[0056] Further, see Figure 2 、 Figure 3 and Figure 4 In order to synchronously realize the axial reciprocating displacement of each group of fan-shaped baffles 450, a wave ring 470 is provided on the rotating frame 410, and a plurality of recessed portions 471 are formed on the circumference of the wave ring 470; a fixing ring 480 is provided on the inner wall of the housing 100, and a plurality of push rods 481 adapted to the wave ring 470 are provided on the circumference of the fixing ring 480;

[0057] Specifically, when the first motor 430 drives the rotating frame 410 to rotate circumferentially through the driving shaft 490, the wave ring 470 also rotates synchronously. In the initial state, each group of top rods 481 is just embedded in the corresponding recessed portion 471 of the wave ring 470. At this time, the rotating frame 410 is located on the side close to the fixed ring 480. As the rotating frame 410 rotates a certain angle, the recessed portion 471 on the wave ring 470 begins to stagger with the corresponding top rod 481, so that the top rod 481 gradually moves out of the corresponding recessed portion 471, and the top rod 481 can be used to The entire wave ring 470 is pushed out toward the side away from the fixed ring 480 to achieve axial displacement of the rotating frame 410, thereby driving each group of fan-shaped baffles 450 to achieve axial displacement relative to the titanium heat pipe unit 300; then the rotating frame 410 rotates again by a certain angle, and the push rod 481 is again embedded in the corresponding recessed portion 471, and the rotating frame 410 gradually approaches the fixed ring 480, thereby driving each group of fan-shaped baffles 450 to reset their axial displacement, and so on and so forth, so that each group of fan-shaped baffles 450 can achieve circumferential rotation while performing axial reciprocating motion.

[0058] It should be noted that the first motor 430 drives the drive shaft 490 to synchronously realize the circumferential rotation of the rotating frame 410 (driving the fan-shaped baffles 450 to rotate around the titanium heat pipe unit 300) and the axial reciprocating motion (driving the fan-shaped baffles 450 to move axially along the titanium heat pipe unit 300);

[0059] When the rotating frame 410 is driven to rotate by the first motor 430, the push rod 481 periodically engages and disengages with the recess 471 of the wave ring 470; when the push rod 481 is embedded in the recess 471, the rotating frame 410 is located at the axial proximal end (close to the fixing ring 480); when the push rod 481 slides out of the recess 471, the wave ring 470 and the rotating frame 410 are pushed toward the axial distal end, and the rotational motion is automatically converted into a precisely synchronized axial reciprocating motion through a periodic engagement and disengagement cycle, ensuring that in the process of continuous circumferential rotation of the rotating frame 410, regular axial reciprocating displacements are synchronously superimposed, so that all fan-shaped deflectors 450 installed on the rotating frame 410 simultaneously rotate circumferentially and reciprocate axially, thereby efficiently driving the dynamic spiral cold flow channel to perform circumferential sweeping and axial pulsation.

[0060] For further information, see Figure 4 、 Figure 5 and Figure 6 The telescopic column 420 includes a sleeve rod 421 fixed on the rotating frame 410, and a sliding rod 422 is movably embedded in one end of the sleeve rod 421 away from the rotating frame 410, and a spring 423 is sleeved on the sliding rod 422;

[0061] A swivel 460 is rotatably mounted on the sealing plate 250 , and one end of the sliding rod 422 away from the sleeve rod 421 is fixed to the swivel 460 ;

[0062] Specifically, the two ends of the telescopic column 420 are supported and fixed by the rotating ring 460 and the rotating frame 410. Under the elastic force of the spring 423, the sleeve rod 421 pushes the rotating frame 410 to move toward the side of the fixed ring 480, so that the wave ring 470 is always in close contact with the top rod 481.

[0063] When the push rod 481 moves out of the recess 471, it can push the wave ring 470 and the rotating frame 410 axially away from the fixed ring 480, and at the same time the sliding rod 422 retracts into the sleeve rod 421, and the spring 423 is compressed; when the push rod 481 moves into the recess 471, under the elastic force of the spring 423, it can push the sleeve rod 421 and the rotating frame 410 axially close to the fixed ring 480; this reciprocating process can realize the axial reciprocating displacement of each group of fan-shaped deflectors 450 under the cooperative action of the push rod 481 and the spring 423.

[0064] It is worth noting that the spring 423 is pre-loaded between the sleeve rod 421 and the slide rod 422, providing a continuous axial elastic preload force, so that the rotating frame 410 is always pushed toward the fixed ring 480, ensuring that the wave ring 470 and the push rod 481 maintain reliable contact; when the push rod 481 slides out of the recess 471 and pushes the rotating frame 410 axially away, the spring 423 is compressed to absorb the impact; when the push rod 481 slides into the recess 471, the spring 423 automatically releases its elastic force to push the rotating frame 410 back to its original position, effectively buffering mechanical shock and achieving adaptive and smooth switching during the movement process;

[0065] The end of the slide rod 422 is fixed to a swivel 460 on the sealing plate 250. The swivel 460 allows the slide rod 422 to rotate circumferentially with the rotating frame 410, while constraining the slide rod 422 to slide only axially. This completely decouples the circumferential rotational degree of freedom when the telescopic column 420 transmits axial reciprocating motion, avoids motion interference, and ensures that the complex motion trajectory of the fan-shaped baffle 450 is precisely controllable.

[0066] The preload of spring 423 is the core power source for the axial return of rotating frame 410. When push rod 481 slides into recess 471 of wave ring 470, the elastic force of spring 423 actively and quickly pushes rotating frame 410 back to its proximal initial position, ensuring synchronization with the rotation phase of wave ring 470. This ensures that the fan-shaped baffles 450 on all telescopic columns 420 maintain consistent axial displacement, thus avoiding deformation and distortion of the cold flow channel due to delay.

[0067] The spring 423 is compressed when the push rod 481 pushes away from the wave ring 470, reducing the instantaneous stress generated by the hard collision between the push rod 481 and the wave ring 470, reducing the wear of the contact surface. At the same time, the elastic reset reduces the impact load on the fixed ring 480 and the push rod 481 structure, and extends the service life of the key components of the guide unit 400.

[0068] In addition, considering that when the rotating frame 410 moves back and forth axially, there is also axial displacement between it and the driving shaft 490, for this purpose, a plurality of limiting slides 491 are axially provided on the driving shaft 490, and the limiting slides 491 are axially slidably connected to the rotating frame 410;

[0069] Specifically, the limiting slide 491 can limit the rotating frame 410 so that the rotating frame 410 can only slide axially relative to the drive shaft 490, but cannot rotate relative to the drive shaft 490, thereby ensuring that the drive shaft 490 can provide circumferential torque to the rotating frame 410 to drive the rotating frame 410 to rotate circumferentially, and at the same time ensure that the reciprocating axial movement of the rotating frame 410 is not restricted.

[0070] It should be noted that the limiting slide 491 extends axially along the drive shaft 490 and forms a sliding keyway with the rotating frame 410, strictly restricting the circumferential relative rotation of the rotating frame 410 and the drive shaft 490, ensuring that the rotational torque of the drive shaft 490 can be directly transmitted to the rotating frame 410, while allowing the rotating frame 410 to slide freely axially along the limiting slide 491, thereby realizing axial displacement transmission;

[0071] By eliminating the circumferential relative rotational freedom, the circumferential rotation of the rotating frame 410 is completely driven by the first motor 430. The axial sliding freedom ensures that the axial reciprocating motion triggered by the interaction between the wave ring 470 and the push rod 481 is not disturbed by the rotational posture of the drive shaft 490. The two motions do not interfere with each other in the mechanical structure, and they work together efficiently.

[0072] Multiple limiting slides 491 are evenly distributed around the drive shaft 490 to form a high-rigidity anti-torsion structure, which effectively suppresses the circumferential deflection or vibration that may occur in the rotating frame 410 under torque load, ensures the stability of the rotation trajectory of the fan-shaped deflector 450, and avoids distortion of the dynamic spiral cold flow channel due to frame shaking.

[0073] In yet another embodiment, see Figure 2 and Figure 7 The titanium heat pipe unit 300 includes a mounting plate 330 fixedly disposed in the housing 100. A plurality of first straight heat pipes 340 and second straight heat pipes 350 are provided on the mounting plate 330 and communicate with the interior of the pipe box 200. The first straight heat pipes 340 and the second straight heat pipes 350 are connected by arc-shaped heat pipes 360.

[0074] Specifically, after the heat flow enters the pipe box 200 through the heat flow input pipe 210, it flows into the first straight heat pipe 340, and then flows into the second straight heat pipe 350 through the curved heat pipe 360. In the process of flowing through the first straight heat pipe 340, the curved heat pipe 360 ​​and the second straight heat pipe 350, the heat flow fully exchanges heat with the cold flow in the shell 100, and then flows back to the pipe box 200 and finally flows out from the heat flow output pipe 220.

[0075] The heat flow path is through the pipe box 200, the first straight heat pipe 340, the curved heat pipe 360, the second straight heat pipe 350, and the pipe box 200, thereby forming a U-shaped two-way flow in a limited space. This allows a single heat pipe unit to have both an inflow section and a return section, doubling the effective heat exchange length and increasing the residence time of the heat flow in the housing 100.

[0076] The first straight heat pipe 340 and the second straight heat pipe 350 are arranged in parallel and in line on the mounting plate 330 to form a regular tube bundle, maximizing the exposed tube wall surface area. The bundle is highly compatible with the dynamic spiral cold flow channel generated by the flow guide unit 400, allowing the cold flow to fully flush the straight tube sections in the axial and circumferential directions, eliminating heat exchange dead zones.

[0077] The first straight heat pipe 340, the second straight heat pipe 350, and the arc heat pipe 360 ​​are pre-installed on the mounting plate 330 for easy disassembly and maintenance. The arc heat pipe 360 ​​is located at the end of the shell 100 to avoid interference with the internal moving parts of the guide unit 400.

[0078] Further, see Figure 7 The center of the mounting plate 330 is fixedly connected to the sealing plate 250 through a plurality of top support rods 320, and the periphery of the mounting plate 330 is fixedly connected to the sealing plate 250 through a plurality of circumferentially distributed pulling rods 310;

[0079] Each group of first straight heat pipes 340 and second straight heat pipes 350 are supported and fixed by the mounting plate 330, so that the entire titanium heat pipe unit 300 is fixedly mounted on the sealing plate 250, and the mounting plate 330 is fixed by the supporting effect of the central supporting rod 320 and the pulling effect of the peripheral pulling rod 310, so as to prevent the center of gravity of the first straight heat pipes 340 and the second straight heat pipes 350 mounted on the mounting plate 330 from shifting downward and tilting.

[0080] It should be noted that the axial supporting force is provided by the centrally distributed supporting rod 320, and the reverse pulling force is applied by the circumferentially distributed pulling rods 310, thereby forming a bidirectional mechanical constraint, effectively resisting the gravity interference of the first straight heat pipe 340, the second straight heat pipe 350 and the curved heat pipe 360, preventing the mounting plate 330 and the heat pipe assembly it carries from sinking or tilting, thereby ensuring the spatial positioning accuracy of the heat pipe;

[0081] The pulling rods 310 are evenly distributed along the periphery of the mounting plate 330 so that the pulling force is evenly applied to the edge of the mounting plate 330, avoiding local stress concentration and preventing the mounting plate 330 from warping due to uneven force. This ensures the parallelism of the first straight heat pipe 340 and the second straight heat pipe 350, as well as the centering of the curved heat pipe 360.

[0082] The top support rod 320 and the pulling rod 310 together rigidly anchor the mounting plate 330 to the closing plate 250, forming a highly stable modular heat pipe core. This not only provides reliable support but also facilitates quick maintenance or replacement of the titanium heat pipe unit 300 by removing the closing plate 250.

[0083] Under the working condition that the guide unit 400 drives the cold flow to be violently disturbed, the coordinated action of the top support rod 320 and the pulling rod 310 ensures that the first straight section heat pipe 340 and the second straight section heat pipe 350 always maintain the preset spatial posture, so that the relative position relationship between the dynamic spiral cold flow channel generated by the fan-shaped deflector 450 and the heat pipe surface remains precisely controllable, thereby optimizing the flushing heat exchange effect.

[0084] In further embodiments, see Figure 8 and Figure 11 The pipe box 200 is provided with a volume adjustment unit 500, which divides the pipe box 200 into an upper chamber 230 and a lower chamber 240. The volume adjustment unit 500 includes a fixed partition 510 provided on the sealing plate 250 and a flip shaft 550 rotatably mounted on one end of the fixed partition 510. A flip partition 520 is provided on the flip shaft 550. A second motor 560 for driving the flip shaft 550 is installed on the pipe box 200. Temperature sensors 580 for detecting the heat flow temperature in the upper chamber 230 and the lower chamber 240 are provided on both sides of the fixed partition 510.

[0085] The volume adjustment unit 500 further includes a controller for controlling the second motor 560 to drive the flip partition 520 to flip according to the temperature difference detected by the temperature sensor 580 , so as to adjust the volume difference between the upper chamber 230 and the lower chamber 240 .

[0086] Specifically, the temperature sensor 580 detects the heat flow temperature difference ΔT between the upper chamber 230 and the lower chamber 240 in real time (where ΔT=T1-T2, T1 is the detected temperature of the upper chamber 230, and T2 is the detected temperature of the lower chamber 240);

[0087] When ΔT is within a set range (e.g., 20°C-35°C), the controller maintains the flip partition 520 horizontally (equilibrium state), keeping the volumes of the upper chamber 230 and the lower chamber 240 equal;

[0088] When ΔT exceeds an upper threshold (e.g., 45°C), indicating that the heat flow temperature in the upper chamber 230 is significantly higher than that in the lower chamber 240 (i.e., the heat flow is excessively exchanged in the titanium heat pipe unit 300), the controller controls the second motor 560 to drive the flip baffle 520 to flip upward, expanding the volume of the lower chamber 240 so that the returning heat flow is fully mixed in the lower chamber 240 before being output, thereby enhancing the mixing of the outlet cold flow and avoiding local low-temperature condensation of the heat pipe.

[0089] When ΔT is lower than the lower limit threshold (such as 10°C), it indicates that the heat flow in the upstream first straight section heat pipe 340 is insufficiently exchanged (possibly due to uneven distribution of cold flow). The controller controls the second motor 560 to drive the flip partition 520 to flip downward, expanding the volume of the upper chamber 230, so that the upper chamber 230 can accommodate more heat flow, prolonging the residence time of the heat flow before entering the first straight section heat pipe 340, enhancing the inlet heat flow pre-cooling, and compensating for insufficient upstream heat exchange.

[0090] It should be noted that this embodiment automatically triggers the directional flipping of the flip partition 520 based on the real-time temperature difference between the upper chamber 230 and the lower chamber 240, thereby realizing dynamic optimization of volume distribution; when flipping downward, the volume of the upper chamber 230 is increased, the heat exchange effect upstream of the heat flow is improved, and the heat exchange at the inlet of the first straight section heat pipe 340 is strengthened; when flipping upward, the volume of the lower chamber 240 is increased, and the mixing and uniform temperature of the heat flow downstream is enhanced; by differentially regulating the residence time of the upper chamber 230 and the lower chamber 240, the heat exchange intensity at the head and end of the titanium heat pipe unit 300 is forced to be balanced, thereby avoiding low local heat exchange efficiency due to uneven flow field distribution.

[0091] Further, see Figure 8 and Figure 9 The side of the flip partition 520 away from the flip axis 550 is provided with an arc-shaped sealing strip 530 that fits the inner wall of the pipe box 200, and the arc-shaped scraping strips 540 are symmetrically provided on both sides of the arc-shaped sealing strip 530;

[0092] Specifically, the arc-shaped sealing strips 530 seal the gap between the flip baffle 520 and the inner wall of the pipe box 200, thereby preventing cross-flow between the upper chamber 230 and the lower chamber 240. The arc-shaped scraping strips 540 provided on both sides can provide a secondary seal for the flip baffle 520 and scrape off heat flux residue adhering to the inner wall of the pipe box 200 when the flip baffle 520 flips.

[0093] It should be noted that the arc-shaped sealing strip 530 always adheres closely to the inner wall of the pipe box 200 as the flip baffle 520 moves. It utilizes elastic deformation to compensate for manufacturing tolerances and thermal deformation, thereby blocking the cross-flow channel between the upper chamber 230 and the lower chamber 240 and preventing high-temperature heat from directly penetrating the low-temperature area. The arc-shaped sealing strip 530 can be made of silicone or fluororubber, and can withstand temperatures of 150°C and a pressure differential of 0.6 MPa, ensuring sealing reliability in extreme working conditions.

[0094] The arc-shaped scraping strips 540 are symmetrically distributed on both sides of the arc-shaped sealing strip 530 to form a triple sealing defense line. When the flip partition 520 moves, the arc-shaped scraping strips 540 radially scrape the inner wall of the pipe box 200 to remove sticky residues (such as oil / polymers) and prevent heat transfer attenuation caused by scaling. The inclined surface design guides the scraped material to the bottom of the chamber to prevent debris from getting stuck in the sealing interface; the arc-shaped scraping strips 540 preferentially scrape off hard particles to protect the arc-shaped sealing strip 530 from wear and failure, thereby extending the life of the seal.

[0095] Likewise, see Figure 8 and Figure 10 A slot 511 is formed in the fixed partition 510 , and a sealing bag 512 is embedded in the slot 511 to abut against the flip shaft 550 ;

[0096] When the turning shaft 550 rotates relative to the fixed partition 510 , the sealing bag 512 can seal the gap between the fixed partition 510 and the turning shaft 550 to prevent cross-flow of heat between the upper chamber 230 and the lower chamber 240 .

[0097] Further, see Figure 11 and Figure 12 A sealed cavity 201 is defined in the pipe box 200 , a second magnetic rotor 552 is mounted on one end of the flip shaft 550 extending into the sealed cavity 201 , and a first magnetic rotor 561 is mounted on one end of the output shaft of the second motor 560 extending into the sealed cavity 201 ;

[0098] Specifically, the second motor 560 and the flip shaft 550 transmit torque via the first magnetic rotor 561 and the second magnetic rotor 552, thereby avoiding rigid transmission and isolating the inside and outside of the pipe box 200 to prevent heat leakage.

[0099] The sealed cavity 201 physically isolates the second motor 560 from the heat flow in the pipe box 200. This, combined with the contactless magnetic coupling transmission between the first magnetic rotor 561 and the second magnetic rotor 552, completely eliminates the risk of dynamic seal leakage at the point where the rotating shaft passes through, meeting the sealing requirements for high-risk media (such as corrosive / toxic heat flow).

[0100] The sealed chamber 201 can be filled with inert gas and has a pressure bearing capacity of up to 2.5 MPa, which far exceeds that of traditional mechanical seals. The sealed chamber 201 isolates particulate matter / viscous matter in the heat flow, preventing impurities from invading the gap between the magnetic rotors and causing transmission instability. The first magnetic rotor 561 and the second magnetic rotor 552 can be coated with samarium cobalt permanent magnets + titanium alloy to withstand acidic / alkaline heat flow corrosion in the pipe box 200.

[0101] For further information, see Figures 8 to 12 The flip shaft 550 has an air cavity 551 axially opened in communication with the interior of the sealed cavity 201. An air passage 203 is opened on one side of the sealed cavity 201. The flip baffle 520 has an air chamber 521 opened in communication with the air cavity 551 and the arc-shaped sealing strip 530.

[0102] Specifically, high-pressure protective gas is filled into the sealing cavity 201 through the air source connected to the air channel 203. The gas can not only maintain the high-pressure seal of the inner wall of the sealing cavity 201, but also enter the arc-shaped sealing bag strip 530 through the air cavity 551 and the air chamber 521, thereby causing the arc-shaped sealing bag strip 530 to expand, improving the contact tightness between the arc-shaped sealing bag strip 530 and the inner wall of the pipe box 200, and improving the sealing between the flip partition 520 and the pipe box 200.

[0103] Also, see Figure 12 and Figure 13A wedge-shaped cavity 202 is formed on one side of the sealing cavity 201, a wedge-shaped snap ring 570 is embedded in the wedge-shaped cavity 202, a wedge-shaped groove 553 is formed on the flip shaft 550, an inner sealing ring 571 adapted to the wedge-shaped groove 553 is provided on the inner side of the wedge-shaped snap ring 570, and an outer sealing ring 572 adapted to the wedge-shaped cavity 202 is provided on the outer side of the wedge-shaped snap ring 570;

[0104] Specifically, when high-pressure shielding gas is injected into the sealed cavity 201 through the gas passage 203, the high pressure drives the wedge-shaped snap ring 570 to move toward the end away from the sealed cavity 201, thereby causing the wedge-shaped snap ring 570 to squeeze the inner wall of the wedge-shaped cavity 202, forcing the outer sealing ring 572 to closely contact the inner wall of the wedge-shaped cavity 202. Simultaneously, the inner sealing ring 571 closely contacts the inner wall of the wedge-shaped groove 553, thereby improving the sealing performance of the rotational connection between the tilt shaft 550 and the pipe box 200 and preventing heat flow from the pipe box 200 from leaking into the sealed cavity 201.

[0105] When the sealing cavity 201 is filled with high-pressure gas (0.4–0.8 MPa), the gas pressure pushes the wedge-shaped retaining ring 570 to displace axially, and the wedge-shaped inclined surface forces the outer sealing ring 572 to expand radially and press the inner wall of the wedge-shaped cavity 202. At the same time, the inner sealing ring 571 radially presses the wedge-shaped groove 553 of the flip shaft 550, forming a double dynamic sealing interface, blocking the heat flow from leaking along the flip shaft 550 to the sealing cavity 201.

[0106] The above describes the specific embodiments of the present invention, but the present invention is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the guidance of the present invention, those skilled in the art can also make many forms, all of which are protected by the present invention.

Claims

1. A titanium tube heat exchanger, characterized in that: include: The shell (100) has side walls at both ends thereof connected to a cold flow input pipe (110) and a cold flow output pipe (120) respectively; A pipe box (200) is detachably connected to one end of the housing (100); a sealing plate (250) is provided at the connection between the pipe box (200) and the housing (100); and a heat flow input pipe (210) and a heat flow output pipe (220) are respectively connected to the upper and lower sides of the pipe box (200); A titanium heat pipe unit (300) is disposed in the housing (100) and communicates with the interior of the pipe box (200); The guide unit (400) is arranged in a housing (100) and includes a rotating frame (410) arranged at one end of the housing (100), a plurality of telescopic columns (420) distributed circumferentially on the rotating frame (410), a plurality of fan-shaped baffles (450) distributed equidistantly on the telescopic columns (420), and adjacent fan-shaped baffles (450) are staggered in sequence along the axial direction.

2. The titanium tube heat exchanger according to claim 1, characterized in that: The guide unit (400) further comprises a first motor (430) mounted on one end of the housing (100); an output end of the first motor (430) is connected to a drive shaft (490) for driving the rotating frame (410); a plurality of limiting slide bars (491) are axially arranged on the drive shaft (490), and the limiting slide bars (491) are axially slidably connected to the rotating frame (410).

3. The titanium tube heat exchanger according to claim 2, characterized in that: The rotating frame (410) is provided with a wave ring (470), and a plurality of recessed portions (471) are provided on the circumferential surface of the wave ring (470); the inner wall of the housing (100) is provided with a fixed ring (480), and a plurality of top rods (481) adapted to the wave ring (470) are provided on the circumferential surface of the fixed ring (480); The telescopic column (420) includes a sleeve rod (421) fixed on the rotating frame (410), and a sliding rod (422) is movably embedded in one end of the sleeve rod (421) away from the rotating frame (410), and a spring (423) is sleeved on the sliding rod (422); a rotating ring (460) is rotatably installed on the closing plate (250), and the end of the sliding rod (422) away from the sleeve rod (421) is fixed on the rotating ring (460).

4. The titanium tube heat exchanger according to claim 1, characterized in that: The titanium heat pipe unit (300) comprises a mounting plate (330) fixedly arranged in the housing (100); a plurality of groups of first straight heat pipes (340) and second straight heat pipes (350) communicating with the interior of the pipe box (200) are passed through the mounting plate (330); the first straight heat pipes (340) and the second straight heat pipes (350) are connected via an arc-shaped heat pipe (360); The center of the mounting plate (330) is fixedly connected to the sealing plate (250) via a plurality of groups of supporting rods (320), and the periphery of the mounting plate (330) is fixedly connected to the sealing plate (250) via a plurality of circumferentially distributed pulling rods (310).

5. The titanium tube heat exchanger according to claim 1, characterized in that: A volume regulating unit (500) is provided in the pipe box (200), and the volume regulating unit (500) divides the pipe box (200) into an upper chamber (230) and a lower chamber (240). The volume regulating unit (500) comprises a fixed partition (510) provided on the sealing plate (250) and a flip shaft (550) rotatably mounted on one end of the fixed partition (510), a flip partition (520) is provided on the flip shaft (550), and a second motor (560) for driving the flip shaft (550) is installed on the pipe box (200). Temperature sensors (580) for detecting heat flow temperatures in the upper chamber (230) and the lower chamber (240) are provided on both sides of the fixed partition (510); The volume adjustment unit (500) further includes a controller for controlling the second motor (560) to drive the flip partition (520) to flip according to the temperature difference detected by the temperature sensor (580), so as to adjust the volume difference between the upper chamber (230) and the lower chamber (240).

6. The titanium tube heat exchanger according to claim 5, characterized in that: An arc-shaped sealing strip (530) is provided on one side of the flip partition (520) away from the flip axis (550) and is in contact with the inner wall of the pipe box (200). Arc-shaped scraping strips (540) are symmetrically provided on both sides of the arc-shaped sealing strip (530).

7. The titanium tube heat exchanger according to claim 5, characterized in that: A card slot (511) is provided in the fixed partition (510), and a sealing bag (512) is embedded in the card slot (511) and abuts against the turning shaft (550).

8. The titanium tube heat exchanger according to claim 6, characterized in that: A sealed cavity (201) is provided in the pipe box (200); a second magnetic rotor (552) is installed at one end of the flip shaft (550) extending into the sealed cavity (201); and a first magnetic rotor (561) is installed at one end of the output shaft of the second motor (560) extending into the sealed cavity (201).

9. The titanium tube heat exchanger according to claim 8, characterized in that: An air cavity (551) communicating with the interior of the sealing cavity (201) is axially opened in the flip shaft (550), an air passage (203) is opened on one side of the sealing cavity (201), and an air chamber (521) communicating with the air cavity (551) and the arc-shaped sealing bag strip (530) is opened in the flip partition (520).

10. The titanium tube heat exchanger according to claim 8, characterized in that: A wedge-shaped cavity (202) is provided on one side of the sealing cavity (201), a wedge-shaped retaining ring (570) is embedded in the wedge-shaped cavity (202), a wedge-shaped groove (553) is provided on the flip shaft (550), an inner sealing ring (571) adapted to the wedge-shaped groove (553) is provided on the inner side of the wedge-shaped retaining ring (570), and an outer sealing ring (572) adapted to the wedge-shaped cavity (202) is provided on the outer side of the wedge-shaped retaining ring (570).

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